Initial revision

From-SVN: r102074

libjava/classpath/javax/imageio/spi/ImageWriterSpi.java

@@ -0,0 +1,135 @@
+/* ImageWriterSpi.java --
+   Copyright (C) 2004  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.imageio.spi;
+
+import java.awt.image.RenderedImage;
+import java.io.IOException;
+
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.ImageOutputStream;
+
+/**
+ * @author Michael Koch (konqueror@gmx.de)
+ */
+public abstract class ImageWriterSpi extends ImageReaderWriterSpi
+{
+  public static final Class[] STANDARD_OUTPUT_TYPE =
+    { ImageOutputStream.class };
+
+  protected Class[] outputTypes;
+  protected String[] readerSpiNames;
+
+  protected ImageWriterSpi()
+  {
+    // Do nothing here.
+  }
+
+  public ImageWriterSpi(String vendorName, String version, String[] names,
+                        String[] suffixes, String[] MIMETypes,
+                        String writerClassName, Class[] outputTypes,
+                        String[] readerSpiNames,
+                        boolean supportsStandardStreamMetadataFormat,
+                        String nativeStreamMetadataFormatName,
+                        String nativeStreamMetadataFormatClassName,
+                        String[] extraStreamMetadataFormatNames,
+                        String[] extraStreamMetadataFormatClassNames,
+                        boolean supportsStandardImageMetadataFormat,
+                        String nativeImageMetadataFormatName,
+                        String nativeImageMetadataFormatClassName,
+                        String[] extraImageMetadataFormatNames,
+                        String[] extraImageMetadataFormatClassNames)
+  {
+    super(vendorName, version, names, suffixes, MIMETypes, writerClassName,
+          supportsStandardStreamMetadataFormat, nativeStreamMetadataFormatName,
+          nativeStreamMetadataFormatClassName, extraStreamMetadataFormatNames,
+          extraStreamMetadataFormatClassNames, supportsStandardImageMetadataFormat,
+          nativeImageMetadataFormatName, nativeImageMetadataFormatClassName,
+          extraImageMetadataFormatNames, extraImageMetadataFormatClassNames);
+
+    if (writerClassName == null)
+      throw new IllegalArgumentException("writerClassName is null");
+
+    if (outputTypes == null
+        || outputTypes.length == 0)
+      throw new IllegalArgumentException("outputTypes may not be null or empty");
+    
+    this.outputTypes = outputTypes;
+    this.readerSpiNames = readerSpiNames;    
+  }
+
+  public abstract boolean canEncodeImage(ImageTypeSpecifier type);
+
+  public boolean canEncodeImage(RenderedImage image)
+  {
+    return canEncodeImage (new ImageTypeSpecifier(image));
+  }
+
+  public ImageWriter createWriterInstance()
+    throws IOException
+  {
+    return createWriterInstance(null);
+  }
+
+  public abstract ImageWriter createWriterInstance(Object extension)
+    throws IOException;
+
+  public String[] getImageReaderSpiNames()
+  {
+    return readerSpiNames;
+  }
+
+  public Class[] getOutputTypes()
+  {
+    return outputTypes;
+  }
+
+  public boolean isFormatLossless()
+  {
+    return true;
+  }
+
+  public boolean isOwnWriter(ImageWriter writer)
+  {
+    if (writer == null)
+      throw new IllegalArgumentException("writer may not be null");
+
+    return pluginClassName.equals(writer.getClass().getName());
+  }
+}